强迫风冷散热器计算工具

1、功耗参数,散热器参数,空气参数,风机参数,层流/紊流选择,空气参数,Q W,6200,散热器宽度W mm,521,环温 ,40,进出风口空气t,10,需进行规划求解,全管长平均温度Tf ,40,45,50,55,60,散热器长度L mm,300,全管长平均温度Tf,45,计算风量 m3/min.,45.94,需输入参数,气压100kpa,1.013,1.013,1.013,1.013,1.013,散热器高度H mm,78,气压100kpa,1.013,计算风量 CFM,1623,空气密度 kg/m3,1.128,1.110,1.093,1.076,1.060,翅片高度Hf mm,63,空气密度

2、 kg/m3,1.128,风机风量 m3/min.,46.38,比热容J/(kg.k),1005,1005,1005,1005,1005,Hb mm,15,比热容J/(kg.k),1005,风机风量 CFM,1638,运动粘度m2/s *106,16.96,17.46,17.95,18.46,18.97,Wf mm,1,运动粘度m2/s *106,16.96,风机静压 Inch.H2O,4.02,普朗特数Pr,0.699,0.699,0.698,0.697,0.696,Ws mm,3,普朗特数Pr,0.699,风机风量q1 m3/min.,46.38,导热系数W/m. *102,2.76,2.

3、80,2.83,2.87,2.9,Nf,131,导热系数W/m. *102,2.76,风机静压P1 Pa,0,膨胀系数-1*106,3.19,3.15,3.1,3.05,3,导热系数W/m. ,208,膨胀系数-1*106,3.19,风机风量q2 m3/min.,42,动力黏度Pa.s *106,19.1,19.4,19.6,19.9,20.1,de m,0.0057,动力黏度Pa.s *106,19.1,风机静压P2 Pa,120,tw2,75,导热侧面积A1 m2,0.16,风机静压 Pa,1001,Re,10624,对流换热面积A2 m2,5.11,风机风速 m/s,31.5,工作Re,

4、4633,翅间面积A2 m2,0.12,风机风量 m3/s,0.773,层流-努谢尔特数Nu,7.4,翅片面积A2 m2,4.99,P-Q后半段斜率b p=b*q+c,-27.4,紊流-努谢尔特数Nu,17.1,通风面积A0 m2,0.02,P-Q后半段常数c p=b*q+c,1270.7,过渡流-努谢尔特数Nu,14.4,截面积A1 m2,0.04,0=a*q2-b*q-c,0.0,努谢尔特数Nu,14.4,通风面积比Ka,0.60,风机工作风量 m3/min.,20.23,换热系数h W/m2.K,69.6,粗糙度K m,0.0000015,风机工作风量 CFM,714,m,25.9,收缩

5、局部压损系数Kc,0.20,风机工作风量 m3/s,0.337,翅片效率f,0.57,扩大局部压损系数Ke,0.16,风机工作静压 Inch.H2O,2.88,总效率,0.58,层流-沿程阻力系数f,0.006,风机工作静压 Pa,717,总热阻R K/W,0.005,紊流-沿程阻力系数f,0.031,紊流 Re 30001000000,风机工作风速 m/s,13.7,导热热阻R1 K/W,0.000,紊流-沿程阻力系数f,0.015,紊流 Re 1000000,对流热阻R2 K/W,0.005,紊流-沿程阻力系数f,0.031,紊流 柯尔布鲁克公式,t ,33.1,6.0071E-08,规格求解等式结果=0,t1 ,2.9,2.046984423,0.0